用Python Turtle制作GIF动画

Question

我找到了一种使用Python显示动画GIF的方法，并且我正在尝试使它与一起工作。

我可以用下面的代码显示动画gif，但是有一些问题。

1)由于某种原因，让.grid(row=0, column=0)将图像从屏幕上移开。2)图像有一个我不想显示的周边边界。

我尝试过使用各种参数的.place()，但没有任何参数将图像放在屏幕上。

对于如何将图像放置在没有边界的特定位置，有什么建议吗？

# main file

import turtle
import tkinter_gif

screen = turtle.Screen()
canvas = screen.getcanvas()
gif_window = tkinter_gif.ImageLabel(canvas)
gif_window.grid(row=1, column=0)
gif_window.load("giphy.gif")
turtle.done()

# tkinter_gif.py

import tkinter as tk
from PIL import Image, ImageTk
from itertools import count

class ImageLabel(tk.Label):
    """a label that displays images, and plays them if they are gifs"""
    def load(self, im):
        if isinstance(im, str):
            im = Image.open(im)
        self.loc = 0
        self.frames = []

        try:
            for i in count(1):
                self.frames.append(ImageTk.PhotoImage(im.copy()))
                im.seek(i)
        except EOFError:
            pass

        try:
            self.delay = im.info['duration']
        except:
            self.delay = 100

        if len(self.frames) == 1:
            self.config(image=self.frames[0])
        else:
            self.next_frame()

    def unload(self):
        self.config(image=None)
        self.frames = None

    def next_frame(self):
        if self.frames:
            self.loc += 1
            self.loc %= len(self.frames)
            self.config(image=self.frames[self.loc])
            self.after(self.delay, self.next_frame)

Answer 1

我建议将ImageLabel从tk.Label改为Canvas的图像项，如下所示：

class ImageLabel:
    def __init__(self, canvas):
        self.canvas = canvas

    def load(self, im, x=0, y=0):
        # create a canvas image item
        self.image = self.canvas.create_image(x, y, image=None)
        self.canvas.tag_lower(self.image)

        if isinstance(im, str):
            im = Image.open(im)

        self.frames = []
        try:
            for i in count(1):
                self.frames.append(ImageTk.PhotoImage(im.copy()))
                im.seek(i)
        except EOFError:
            pass

        try:
            self.delay = im.info['duration']
        except:
            self.delay = 100

        num_frames = len(self.frames)
        if num_frames == 1:
            self.canvas.itemconfig(self.image, image=self.frames[0])
        else:
            self.next_frame(0, num_frames)

    def unload(self):
        self.canvas.delete(self.image)
        self.frames = None

    def next_frame(self, loc, total):
        if self.frames:
            self.canvas.itemconfig(self.image, image=self.frames[loc])
            loc = (loc + 1) % total
            self.canvas.after(self.delay, self.next_frame, loc, total)

然后将其加载到特定位置：

gif_window = tkinter_gif.ImageLabel(canvas)
gif_window.load("giphy.gif", -200, -200) # 0, 0 is the center of canvas